72589172 has 6 divisors (see below), whose sum is σ = 127031058. Its totient is φ = 36294584.

The previous prime is 72589169. The next prime is 72589211. The reversal of 72589172 is 27198527.

It can be written as a sum of positive squares in only one way, i.e., 52911076 + 19678096 = 7274^2 + 4436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9073643 + ... + 9073650.

It is an arithmetic number, because the mean of its divisors is an integer number (21171843).

Almost surely, 2^72589172 is an apocalyptic number.

It is an amenable number.

72589172 is a deficient number, since it is larger than the sum of its proper divisors (54441886).

72589172 is a wasteful number, since it uses less digits than its factorization.

72589172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18147297 (or 18147295 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 72589172 is about 8519.9279339675. The cubic root of 72589172 is about 417.1484307711.

The spelling of 72589172 in words is "seventy-two million, five hundred eighty-nine thousand, one hundred seventy-two".